90 Proceedino;s of the Ohio State Academy of Science 



83. Bark of ripe twigs green, Ijundles scar or vascular bundle 

 in base of petiole i ; pith rhombic. Euonymus. (55). 



83. Bark of ripe twigs gray, brown, or red ; pith cylindrical 



or nearly so. 84. 



84. Axillary buds sometimes superposed ; leaves finely dentic- 



ulate ; twigs light brown, sometimes thorny; drupe 

 narrowly oblong. Adelia. (70). 

 84. Axillary buds not superposed ; twigs not 4-angled, brown ; 

 flowers epigynous ; fruit a fleshy drupe ; vascular 

 bundles in the base of the petiole 3. Viburnum. {77). 



84. Axillary buds not superposed ; leaves serrate with 



stipules, small ; bundle scar central : twigs brown, 

 sometimes with thorns; shrub-like trees with drupe- 

 like berries. Rhamnus. (60). 



85. Leaves coriaceous, evergreen, hence on wood of the 



previous season. Kalmia. (63). 



85. Leaves deciduous each year. 86. 



86. Leaves W'ith the tw^o outer lateral veins more or less 



parallel with the midrib ; fruit ;a drupe. Cornus. (75). 

 86. Leaves pinnately veined to the tip, 3-6 in. long, fruit 

 an oblong drupe. Chionanthus. (71 J. 



